Add jquery.lazload.js 1.8.3

https://github.com/tuupola/jquery_lazyload/blob/master/jquery.lazyload.j
s
https://github.com/tuupola/jquery_lazyload/blob/master/jquery.lazyload.m
in.js
Merge pull request #785 from melvinchien/master

Add jquery.lazyload.js 1.8.3